• 2022-06-07
    An analog signal x(t)=4sin(0.34πt) is sampled with the frequency 20Hz , then the expression of the discrete time signal x [n] is
    A: x[n]=4sin(0.034πn)
    B: x[n]=4sin(0.017πn)
    C: x[n]=4cos(0.034πn)
    D: x[n]=4cos(0.017πn)